Sometimes it only takes a tiny crack to shatter an arrow.. Like said before, it's good to check your arrows every shot.. I'm guilty of not doing so, but I do check often.
They will all do it! I shot a Carbon Express the other day at my bag target and it it low where the bag was hard, broke the brand new arrow in half on impact. I know why it did, because the arrow was 30 inches long and it had too much forward motion shot at an angle.

You can never be too careful with carbons.